wind (something) on (something)

To wrap, coil, or twist something around on something else. Please be sure to wind the cables back on the correct spools, or else they'll end up getting tangled. You've got to be careful when you wind the film on the reel for the first time.

wind on

To wrap, coil, or twist something around on something else. A noun or pronoun can be used between "wind" and "on." Please be sure to wind the cables back on the spools when you're done, or else they'll end up getting tangled. I wound on more copper wire to produce a stronger magnetic field.